DESIGN OF DSP WINDOWS USING WINDOW SPECTRUM ZEROS PLACEMENT |
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| Milos Sedlacek, Zdenek Stoudek |
- Abstract:
- Windows are frequently used in digital signal processing, mainly for leakage reduction in non-coherent sampling (spectral analysis, detection of weak harmonic components close to a strong harmonic components, e.g. in ADC testing) or in FIR digital filter design. Many windows are described and compared in literature. This paper informs about a mathematical instrument and an algorithm allowing design of several classes of cosine windows with various prescribed properties. The design is based on iterative window spectrum zeros placing. Window coefficients are presented either as high-accuracy decimal numbers or in a more compact form of ratios. The proposed algorithm can be implemented using any computing instrument; we have selected Matlab environment. The designed Graphical User Interface allows easy inserting of required window spectrum properties and presentation of resulting window coefficients, window spectrum and window shape in time domain. The method allows design of all three window classes of Rife and Vincent windows (up to the window order 10) but allows also design of windows with different properties, corresponding to some newly defined window classes. Both symmetrical and periodic (DFT) windows can be designed. The principle of the method is described and definitions of the new window classes and examples of designed windows are presented.
- Keywords:
- digital signal processing, data windows, windows design
- Download:
- IMEKO-WC-2009-TC4-044.pdf
- DOI:
- -
- Event details
- Event name:
- XIX IMEKO World Congress
- Title:
Fundamental and Applied Metrology
- Place:
- Lisbon, PORTUGAL
- Time:
- 06 September 2009 - 11 September 2009